so i have a b2300 2006 with 51k miles and im looking for an edge..should i put headers and replace top end or put money into a new rear diff with gears? its only 2wd but i want more cause shes a pretty nice truck and is "new" but im close to broke whats some good options here? besides bolting on a turbo, wich is not one. i wana run n/a and keep her running well. and where is the best parts shop? summit nor jegs have b2300 listed newer then say 2000 or rangers really. where can i find good parts catalog or web????? please help!!!!!!!!!!